[169071] in North American Network Operators' Group
Re: 7206 VXR NPE-G1 throughput
daemon@ATHENA.MIT.EDU (Mark Walters)
Tue Feb 11 16:04:31 2014
From: Mark Walters <mark@metricnetservices.com>
To: "nanog@nanog.org" <nanog@nanog.org>
Date: Tue, 11 Feb 2014 13:03:34 -0800
In-Reply-To: <D62D2399-805F-4D0C-90BE-FA5DE88CD5F2@koding.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
We run 7206 NPE-G1s on some GigE peering points. At about 800Mbps of
aggregate Internet traffic (inbound + outbound, as measured from Cacti)
the CPU sits around 70%.
Setup:
- inbound and outbound Internet-facing ACLs (50 lines and 25 lines
respectively, turbo ACL)
- Inbound Internet-facing policy-map to remark DSCP (references 7-line ACL)
- minimal routes via BGP (approx 1500)
- 15.1 SP train
YMMV, but they work well for us in this scenario. With
downstream-to-upstream traffic patterns of approx 7-to-1 the GigE and CPU
will peak out at about the same time.
Side note - our G2s at that same 800Mbps traffic rate run at approx 60%
CPU.
Cheers=20
Mark W
On 2/11/14 2:10 AM, "Geraint Jones" <geraint@koding.com> wrote:
>Or assuming your using an Ethernet of some sort as your upstream
>connections you could grab something like a CCR from mikrotik for < $1k
>and sleep easy knowing you're only using 6% of it's capacity.
>
>Sent from my iPhone =95
>
>> On 11/02/2014, at 3:52 pm, Octavio Alvarez <alvarezp@alvarezp.ods.org>
>>wrote:
>>=20
>>> On 02/10/2014 06:05 PM, Vlade Ristevski wrote:
>>> Are you suggesting getting the default gateway from both providers or
>>> getting the full table from one and using the default as a backup on
>>>the
>>> other (7206)?
>>=20
>> Whatever suits you best. Test and see. I'd just receive the full table
>> anyway but filter them out, letting only the default routes go into the
>> RIB. This should streamline your FIB. As I say, you lose outbound load
>> balancing and your redundancy becomes all-or-nothing, but you save a few
>> cycles.
>>=20
>> Again, I wouldn't recommend any of this because of the drawbacks, but
>> along with other recommendations that others have made, like Turbo ACLs,
>> it may buy you some time.
>>=20
>
